Pence was seen by many Republicans as the safest pick for Trump. Other prospective vice-presidential nominees included former House Speaker Newt Gingrich, New Jersey Gov. Chris Christie, and retired Lt. Gen. Michael Flynn.

While Pence was seen as the least controversial pick among the main contenders, that doesn’t mean he doesn’t have baggage of his own. Among other things, Pence came under heavy fire for his support of a “religious freedom” bill in 2015 that critics said would give Christian businesses legal cover to discriminate against gay people.

Pence has also in the past called out Trump over his proposed ban of Muslims entering the United States.

Calls to ban Muslims from entering the U.S. are offensive and unconstitutional.